冠状动脉造影与常规心电图检查的比较

Coronary angiography and conventional electrocardiogram comparative analysis

目的探讨冠心病(CHD)心电图的诊断价值,指导临床工作。方法在选择性冠状动脉造影(CAG)的639例住院患者中,对常规心电图(ECG)检查进行CHD诊断价值的分析比较。并使用Spss11.0统计软件分析包对数据进行R×C表χ2检验。结果ECG检查的敏感性为77.2%,特异性为50.0%,假阳性率为50.0%,假阴性率为22.8%,阳性预测值为62.7%,阴性预测值为66.8%。心电图检查的阳性检出率随病变支数的增多而增高,冠状动脉狭窄单支病变为64.6%,双支病变为87.9%,三支病变为89.3%。结论ECG可作为CHD筛选检查的首选方法,具有实用价值,用于发现院外及日常生活中的心肌缺血,是其他检查方法无法替代的。

Objective To investigate the value of ECG in the diagnosis of coronary artery disease （CHD）so as to direct clinical work.Methods The diagnostic value of routine ECG was analyzed and compared in 639 patients with CHD confirmed by coronary angiography（CAG.）. The data were analyzed by chi-square test using Spss 11.0 statistical analysis software package. Results The sen- sitivity of ECG was 77.2%, specificity 50.0%, false positive rate 50.0%, false negative rate 22.8%, positive predictive value 62.7% and negative predictive value 66.8 %.The positive rate of ECG rose with the increase of number of stenosed coronary vessel. The coronary stenosis rate in single vessel was 64.6%,two vessels 87.9% ,three vessels 89.3% .Conclusion It is suggested that ECG is the first choice for the screening of CHD. It has practical value to examine the patient with coronary heart disease outside hospital or in daily life, which cannot be substitute by other methods.